Improvement in water-wheels



etched grant @sind didine.

Letters Patent No. 108,482, dated (lctober 18, 1870.

lMPROVMENT IN WATER-WHEELS.4v

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern.-

Beit known that I DAVID O. HOLMAN, of Adams, in the county of Jeffersonand State of New York, have invented a new and valuable Improvement in`Water-Viheels; and I do hereby declare that the following is a full,clear, and exactdescription of thc construction and operation ofthesame, reference bcing had to the annexed drawing making a part of thisspecification, and to the letters and figures of reference markedthereon.`

Figure 1 of the drawing isI a representation of my water-wheel inhorizontal section Figure 2 is a side elevation; and

Figure 3 is a plan view .of the same.

-Iiigure 4.- is a perspective view of the wheel itself,

.and

Figure 5 is a perspective view of one of the gates.

My invention relates to turbines; and

It consists iu the novel construction and arrangement of buckets,casing-gates, and method of operating the same.

The wheel is composed of a ring or cylinder, A, of the same height asthe buckets B B, and is, ou its inner side, provided with arm C C,meeting in a ceutral sleeve, D, within which the shaft or spindle E issecured by any suitable means.

B B represent the buckets, so formed'that the inner and outer sides arebounded by cylindrical snrfaces, the axes of 4the cylinders upon whichthey are constructed being oblique to each other.

The right line of the center of the inside of each bucket coincides withthe prolongation of the diameter of the wheel at this point.

The formation of the bucket is illustrated by diagram on sheet 3 of thedrawing.

The cylinder-A is perforated with two holes foreach bucket, and thebucket is secured to the cylinder by means of screw-bolts rigidlyattached to or formed ou the bucket itself, and passing through saidholes, and fastened by nuts from the inside ofthe cylinder A.

The ends of each bucket are flush with the edges of the cylinder A, andsomewhat inclined to the direction of the radius, slanting outward andaway from the wall of the succeeding bucket.

The curved outer edges of the buckets are designed to fit the cylinderof the-casingneatly.

By the construction of the buckets, and their position with respect toeach orher and the cylinder A, it is designed to utilize all the directforce of the water admitted to the wheel, as well as its reactingpower', in a superior manner, the tendency of the water being to theouter edge of the bucket er toward the end of the lever-arm.

This wheel is placed in a casing, G, the spindle or shaft E havingsuitable bearings at its lower end, and where it passes through the topof the casing.

This casing isprovided with a suitable number of chutes or guides HH,which are slightly curved inward, as shown at iig. 1, to guide the waterinto the wheel.

Above and below the chutes /H H are projecting ilanches a c around thecasing, having sueient width to be exactly evenwith the outer ends ofthechutes. In these iianches are formed semicircularrecesses, ni., eachrecess com mencing at the outer edge of a chute, and curving inward tothe inner edge of the adjoining chute, and then ont again, to completethe semicircle.` The-se recesses are covered on the upper side of theupper tianch and ou thc lower side of the loweriianch by the plates b b,secured by bolts, and extending in scmicircular form beyond the anches.

The plates b are provided with slots c, for the fastening bolts to passthrough.

In this manner they are made adjustable, and their position can bechanged to correspond with the wear of the gate or the edges of thechutes against which it closes.

In the plates b b, and in the centeis of the circles formed by the outeredge ofthe plates, and the semicircular recesses m, are the bearings ofthc adjustable rotating gates I. l

Each gate consists of a horizontally-curved plate. whose outer surfaceis a portion of a true cylinder, and whose inner surface iscorrespondingly concave or hollcwed out, this plate being connected withthe journals e of the gate by sector-shaped lugs or earsd l projectingfrom the. concave side.

When the gate is shut it closes the outer opening of the. water-way orspace between the outer end of one chute and the inner end of the next.In this position its convex side is turned toward the wheel.

XVhen open, the gates form a daring continuation of the water-way',`their concavities serving to guide the water to the chutes. that theaction of the head of water canhave no eiect upon it, as regardschanging its position. In what` ever position the gate is placed it willremain, and there is, therefore, no necessity of a locking device.

The gates I I are operated simultaneously by the following means To eachof the upper journals e is iirmly keyed au arm, f, which, by a rod, h,is connected with a ring, k, placed around the upper part ofthe easing Gat the base of the t'op L. This ring is on one side provided with arack, through which it is operated by means of a pinion on the uprightshaft J. By tux-:F

The forni of the gate is such other, in combination-with the cylindricalbody A,

having the perforations s, substantially as specified.

2. The cylinder-shaped concavoconvex gate I, .hav`

ing-its bearings in the'projecting ears .upon the axial line of thecylinder of formation, substantially as spec-rv fied. 3. In combination,the cylinder-shaped rotating gates I I, 'and the adjustable slottedbearingfplates vb,. sub

stantially as specified.

' 4. The casing G, having the centrallydepressed top lL, supportingcylinder It, and flanches a', provided with the semicircular recessesmf, substantially as specified.

5. In combination with the gates I, ears d, and pivots-e, the armsf,rods'h, ring k, and arack and pinion mechanism for operating the same,substantially as specified.

6. The combination of the wheel A B, casing G, cylinder-shaped rotatinggates I, and the ring k, with the mechanism for regulating theadjustment of the gates, as specified.

In testimony 'that I claim the above, I have hereunto subscribed my namein the presence of two wit- DAVID C. HOLMAN.

UGSSES.

Witnesses:

'D'. D. KANE,

EDM'. P. MASI.

